Ball mill tank body cover locking device

Abstract

The utility model discloses a ball mill tank body cover locking device which comprises a locking belt, a locking pressure plate and a screw arranged in a screw hole of the locking pressure plate, protrusions are arranged on the two sides of the locking pressure plate, a clamping ring is arranged on the locking belt, the locking belt wraps a tank body tightly and then pulls the protrusions of the locking pressure plate through the clamping ring, and the screw abuts against a cover. A synchronous body and supporting legs are arranged above the locking and pressing disc; a rotating shaft and a plurality of lifting rods are arranged in the synchronous body, and the lower end of each lifting rod is movably connected with the corresponding screw; a rack section is arranged on the lifting rod, and a gear section matched with the rack section is arranged on the rotating shaft; a fixed ring and a movable ring are symmetrically arranged on the rotating shaft by taking the middle point of the length of the locking and pressing disc in the horizontal direction as a reference, and a first rubber ring connected with the fixed ring is arranged between the fixed ring and the movable ring; pull rings are arranged on the two sides of the locking and pressing disc, and a traction rope is fixed to the movable ring. According to the scheme, the problems that an existing locking device cannot apply force to the cover evenly, and a screw is prone to being stuck are solved or relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball mills, in particular to a locking device for a tank cover of a ball mill. Background Art

[0002] Ball mill is a grinding equipment widely used in various industries. During operation, the tank body needs to be strictly sealed to ensure the grinding effect and operation safety. The locking device is a key component to achieve this sealing purpose. Its function is to ensure that the tank cover is tightly fixed during high-speed rotation and material grinding to prevent material leakage and accidents.

[0003] Although the existing locking device also uses a multi-screw fixing method to enhance the sealing of the lid, it is usually impossible to operate each screw at the same time when locking. The operator must manually tighten the screws one by one, which is not only inefficient, but also difficult to ensure that all screws are tightened with the same force and speed, resulting in uneven force on the lid, affecting the sealing effect and the stability of equipment operation. Since the existing locking device cannot achieve synchronous tightening of the screws during operation, it will cause local stress concentration on the lid, increasing the risk of deformation or damage to the lid. In addition, uneven tightening may also cause sealing failure, trigger material leakage, cause resource waste and environmental pollution. In some cases, sealing failure may also cause safety accidents, posing a threat to the safety of operators.

[0004] When removing the existing locking device, the locking disk is movable and lacks an effective anti-skew mechanism. The locking disk is prone to skew during the removal process, which can cause the screws to get stuck and difficult to loosen, increasing the difficulty and time of removal. The skewness of the locking disk and the sticking of the screws increase the difficulty of maintenance and replacement, and also cause damage to the locking device, increasing maintenance costs. In some emergency situations, the inability to quickly remove the locking device may delay processing time and increase safety risks. In addition, stuck screws may damage the tank or lid during forced removal, resulting in additional economic losses. Utility Model Content

[0005] The utility model aims to solve or alleviate the problem that when the existing ball mill tank cover is fixed with screws, the screws cannot move at the same time, resulting in uneven force on the cover, and the screws are easily stuck by the locking plate during the process of loosening the screws. A ball mill tank cover locking device is proposed.

[0006] The utility model is realized by the following technical solutions:

[0007] A locking device for a ball mill tank cover comprises a locking belt, a locking pressure plate and a screw arranged in a screw hole of the locking pressure plate, protrusions are arranged on both sides of the locking pressure plate, a clamping ring is arranged on the locking belt, and after the locking belt is tightly wrapped around the tank body, the protrusions of the locking pressure plate are tightened through the clamping ring so that the screw is pressed against the cover, a synchronous body and a supporting foot are arranged above the locking pressure plate, and the supporting foot is connected to the lower side of the synchronous body; a rotating shaft and a plurality of lifting rods are arranged in the synchronous body, and the lower end of each lifting rod is movably connected to the corresponding screw; a rack section is arranged on the lifting rod, and a gear section matching the rack section is arranged on the rotating shaft; when the rotating shaft rotates, the gear section drives each lifting rod to move, so that each screw enters or The screw hole is separated from the locking pressure plate; with the midpoint of the horizontal length of the locking pressure plate as a reference, a fixed ring and a movable ring are symmetrically arranged on the rotating shaft, and a first rubber ring connected to the fixed ring is arranged between the fixed ring and the movable ring; pull rings are arranged on both sides of the locking pressure plate, and a traction rope is fixed on the movable ring; one end of the traction rope is fixed on the movable ring, and the other end is movably connected to the pull ring; when the rotating shaft rotates, the fixed ring and the first rubber ring rotate at the same time, so that the traction rope pulls up the locking pressure plate; until the locking pressure plate is blocked by the retaining ring and the friction force of the first rubber ring is insufficient to drive the movable ring to rotate, the rotating shaft continues to rotate relative to the movable ring to continue to complete the synchronous lifting and lowering of the screw.

[0008] The ball mill tank cover locking device of the utility model realizes the synchronous operation of the screws during the locking process of the locking device, ensuring that the cover is evenly stressed. At the same time, when the locking device is removed, the locking plate is prevented from being skewed during removal, causing the screws to be stuck.

[0009] Preferably, the protrusions of the locking plate are provided with a groove that cooperates with the snap ring, so as to ensure that the snap ring can be smoothly inserted and locked.

[0010] Preferably, the lifting rod is a hollow structure, and a fixing screw is provided at the lower end of the lifting rod for locking the screw.

[0011] Preferably, one end of the rotating shaft is movably connected to the inner wall of the synchronization body, and the other end of the rotating shaft is fixedly connected to a rotating disk, and a handle is connected to the rotating disk, so that the operator can control the locking and removal process more conveniently and accurately.

[0012] Preferably, the cover is provided with a plurality of positioning grooves matching corresponding screws, so as to ensure that the screws can be accurately positioned and tightened.

[0013] Preferably, a second rubber ring is provided between the movable ring and the rotating shaft to enhance the friction force and ensure the stable rotation of the movable ring on the rotating shaft.

[0014] Preferably, a fixing sleeve for guiding the lifting rod is provided on the inner wall of the synchronization body to ensure the linearity and stability of the lifting rod during movement.

[0015] Preferably, the gear segment has an involute tooth shape with a module of 3.5, and the number of teeth is designed to be 30 to 40; the width of the rack rod is 15 to 20 mm.

[0016] Preferably, the inner diameter of the lifting rod is 1.2 to 1.5 times the diameter of the screw.

[0017] Preferably, a wear-resistant gasket is installed at the bottom of the supporting foot to improve the wear resistance of the contact part between the locking device and the tank body and protect the surface of the tank body.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0019] 1. The utility model realizes the synchronous operation of multiple screws by means of the rotating shaft and lifting rod arranged in the synchronous body, ensuring that each screw can enter or leave the screw hole of the locking plate at the same time during the locking and removal process, ensuring the uniform force of the cover, effectively avoiding deformation or damage of the cover caused by uneven force, and improving the sealing effect and the stability of equipment operation.

[0020] 2. The utility model uses the friction force of the traction rope and the rubber ring to assist in the lifting of the balanced locking plate, which simplifies the operation process, reduces the labor intensity of manually tightening the screws one by one, and improves the operation efficiency. At the same time, since the locking plate will not be skewed when removed, the risk of screws being stuck is greatly reduced, thereby reducing the possibility of equipment damage and ensuring the safety of operation.

[0021] 3. The utility model ensures that the locking plate is not easily deformed under high-speed rotation and impact during the operation of the ball mill through reasonable design of the locking plate thickness and selection of hard alloy steel materials, thereby improving durability. In addition, the preferred materials and designs of key components such as rubber rings and fixing screws, such as the use of wear-resistant gaskets, increase the service life of components, simplify maintenance and replacement processes, and reduce long-term operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model.

[0023] In the attached picture:

[0024] Figure 1 It is a cross-sectional structural diagram of the synchronous body of the utility model;

[0025] Figure 2 It is a top view of the tank body, lid, locking plate, locking belt and snap ring of the utility model;

[0026] Figure 3 This is a schematic diagram of the locking belt and the clamping ring structure of the utility model;

[0027] Figure 4 It is a diagram of the matching relationship between the rotating shaft gear section and the rack section of the lifting rod of the utility model;

[0028] Figure 5 for Figure 1 A magnified image of point A;

[0029] Figure 6 for Figure 1 A magnified view of point B;

[0030] Figure 7 for Figure 2 Enlarged view of point C.

[0031] The reference numerals represent:

[0032] 1, tank body, 2, locking belt, 21, snap ring, 3, cover, 31, positioning groove, 32, auxiliary positioning groove, 4, locking plate, 41, snap groove, 42, traction rope, 43, pull ring, 5, screw, 6, nut, 7, synchronous body, 8, rotating shaft, 81, turntable, 82, handle, 83, gear segment, 84, fixed ring, 85, first rubber ring, 86, movable ring, 87, second rubber ring, 9, lifting rod, 91, rack segment, 92, fixed sleeve, 10, supporting foot. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The schematic implementation mode of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model. It should be noted that the utility model is already in the actual research and development and use stage.

[0034] Unless otherwise defined, the technical terms or scientific terms used in this utility model shall have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The words "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0035] Existing locking devices have significant limitations during operation, especially in the locking and removal stages. When locking, since it is impossible to achieve synchronous operation of the screws, each screw must be tightened manually individually, which is not only inefficient, but also difficult to ensure uniform tightening force, often resulting in uneven force on the cover, increasing the risk of deformation or damage to the cover. In addition, when removing the locking device, due to the lack of an effective synchronization mechanism and anti-skew design, the locking disk is prone to skew, which increases the possibility of the screw getting stuck. Once the screw is stuck, the removal time is extended, the labor intensity is increased, and the equipment may be damaged during the disassembly process, resulting in additional maintenance costs, and even delayed processing in emergency situations, increasing safety risks. These problems highlight the urgent need for efficient and safe locking devices in the prior art.

[0036] Embodiment 1:

[0037] Please refer to the attached Figure 1 -Attached Figure 7 A ball mill tank cover locking device comprises a locking belt 2, a locking pressure plate 4 and a screw 5 arranged in a screw 5 hole of the locking pressure plate 4. There are protrusions on both sides of the locking pressure plate 4. A clamping ring 21 is provided on the locking belt 2. After the locking belt 2 is wrapped tightly around the tank body 1, the protrusion of the locking pressure plate 4 is tightened by the clamping ring 21, so that the screw 5 is pressed against the lid 3. A synchronous body 7 and a supporting foot 10 are provided above the locking pressure plate 4, and the supporting foot 10 is connected to the lower side of the synchronous body 7; a rotating shaft 8 and a plurality of lifting rods 9 are provided in the synchronous body 7, and the lower end of each lifting rod 9 is movably connected to the corresponding screw 5; a rack segment 91 is provided on the lifting rod 9, and a gear segment 83 matching the rack segment 91 is provided on the rotating shaft 8; when the rotating shaft 8 rotates, the gear segment 83 drives each lifting rod 9 to move, so that each screw 5 enters or leaves the lock at the same time The screw 5 hole of the pressure plate 4; with the midpoint of the horizontal length of the locking pressure plate 4 as a reference, a fixed ring 84 and a movable ring 86 are symmetrically arranged on the rotating shaft 8, and a first rubber ring 85 connected to the fixed ring 84 is arranged between the fixed ring 84 and the movable ring 86; a pull ring 43 is arranged on both sides of the locking pressure plate 4, and a traction rope 42 is fixed on the movable ring 86; one end of the traction rope 42 is fixed on the movable ring 86, and the other end is movably connected to the pull ring 43; when the rotating shaft 8 rotates, the fixed ring 84 and the first rubber ring 85 rotate at the same time, so that the traction rope 42 pulls up the locking pressure plate 4; until the locking pressure plate 4 is blocked by the retaining ring 21, and the friction force of the first rubber ring 85 is insufficient to drive the movable ring 86 to rotate, the rotating shaft 8 continues to rotate relative to the movable ring 86, and the synchronous lifting and lowering of the screw 5 continues.

[0038] The ball mill tank cover locking device of the utility model realizes the synchronous operation of the screw 5 during the locking process of the locking device, ensuring that the cover 3 is evenly stressed. At the same time, when the locking device is removed, the locking plate 4 is prevented from tilting during removal, causing the screw 5 to be stuck.

[0039] A synchronization body 7 is provided above the locking pressure plate 4, and the synchronization body 7 is connected to the tank body 1 through a supporting foot 10 to provide stable support; a rotating shaft 8 is provided inside the synchronization body 7, and a fixed ring 84 and a movable ring 86 are symmetrically provided on the rotating shaft 8, and the two are connected by a first rubber ring 85 to provide appropriate friction; when the rotating shaft 8 rotates, the gear segment 83 is engaged with the rack segment 91 on the lifting rod 9, so that each lifting rod 9 is driven to move synchronously, so as to realize the synchronous lifting or lowering of the screw 5; one end of the traction rope 42 on the movable ring 86 is fixed to the movable ring 86, and the other end is connected to the pull ring 43 of the locking pressure plate 4. The rotation of the rotating shaft 8 drives the locking pressure plate 4 to rise in a balanced manner through the friction force of the traction rope 42 and the rubber ring.

[0040] Working process:

[0041] When the locking device needs to be removed, the locking plate 4 is easily skewed due to the loss of force support, causing the screw 5 to be stuck during the disengagement process; the technical solution of the utility model is that pull rings 43 are provided on both sides of the locking plate 4, and a traction rope 42 is fixed on the movable ring 86, one end of the traction rope 42 is fixed on the movable ring 86, and the other end is movably connected to the pull ring 43. When the rotating shaft 8 rotates, the fixed ring 84 and the first rubber ring 85 rotate at the same time, and the traction rope 42 pulls up the locking plate 4 in a balanced manner through the coordinated action of the movable ring 86 and the fixed ring 84; the fixed ring 86 is fixed to the locking plate 4. A first rubber ring 85 is provided between the ring 84 and the movable ring 86, which assists in balancing the lifting of the locking plate 4 through friction. When the locking plate 4 is blocked by the retaining ring 21 and the friction force of the first rubber ring 85 is insufficient to drive the movable ring 86 to rotate, the rotating shaft 8 continues to rotate relative to the movable ring 86 to complete the synchronous lifting and lowering of the screw 5. At this time, the locking plate 4 has been lifted and stabilized on the retaining ring 21 in a balanced manner. At the same time, the synchronous body 7 can drive the screw 5 to disengage from the screw 5 hole of the locking plate through a variety of connection methods, thereby avoiding the problem of the screw 5 being stuck by the locking plate 4.

[0042] Steps:

[0043] During the locking operation, the operator rotates the turntable 81, and drives the rack segment 91 through the gear segment 83, so as to achieve the synchronous descent of the screw 5 and evenly press the cover 3; during the removal operation, the operator rotates the turntable 81 in the opposite direction, and synchronously lifts the screw 5. At the same time, the traction rope 42 pulls up the locking plate 4 through the friction force of the rubber ring until it is blocked and stabilized by the retaining ring 21.

[0044] The technical solution of the utility model can ensure that the screws 5 contact the surface of the cover 3 at the same time during the installation process to achieve uniform force through the synchronous lifting mechanism, and ensure that the locking plate 4 will not be skewed due to uneven force when the locking device is removed, thereby avoiding the problem of the screws 5 getting stuck.

[0045] It should be noted that the friction coefficient of the rubber ring is a key parameter for achieving balanced lifting. A rubber material with an appropriate friction coefficient should be selected to ensure that when the shaft 8 rotates, the rubber ring can provide sufficient friction to drive the movable ring 86 and the locking plate 4 to rise, and can stably maintain the position when needed; the material of the rubber ring should be selected according to its working conditions (such as temperature, chemical environment, and expected life). Usually, synthetic rubber such as chloroprene rubber, nitrile rubber or silicone rubber is selected for its wear resistance, chemical corrosion resistance and stability; the hardness of the rubber ring will affect its friction performance; too high hardness may cause excessive friction and difficulty in rotation; too low hardness may cause insufficient friction and fail to stabilize the locking plate 4; the hardness is generally controlled within the range of 60 to 80 degrees Shore A hardness; when the shaft 8 starts to rotate, the rotation of the gear segment 83 is transmitted to the movable ring 86 through the mechanical connection inside the synchronous body 7. The friction between the rubber ring and the fixed ring 84 is less than the traction on the movable ring 86, so that the movable ring 86 can rotate with the fixed ring 84; when the locking plate 4 is blocked by the clamping ring 21 and reaches the desired position, the rotating shaft 8 continues to rotate, but due to the friction between the rubber ring and the fixed ring 84, the movable ring 86 begins to resist further rotation. As the tension of the traction rope 42 increases, the friction of the rubber ring eventually reaches a point, causing the movable ring 86 to stop rotating and be fixed in the current position; in order to prevent the movable ring 86 from rotating during the locking or removal process, some mechanical locking mechanisms can be designed between the rubber ring and the fixed ring 84, such as a ratchet and pawl system. When the set position is reached, the pawl will lock the ratchet to prevent rotation.

[0046] It should be noted that the locking plate 4 is designed to have a thickness of 15-30 mm to ensure sufficient strength and rigidity, and is made of hard alloy steel to prevent deformation under high-speed rotation and impact during the operation of the ball mill.

[0047] Please refer to the attached Figure 2 As a further preferred embodiment of the present invention, the projections of the locking plate 4 are provided with a slot 41 that cooperates with the snap ring 21. The slot 41 and the snap ring 21 are precisely matched in shape and size to ensure that the snap ring 21 can be smoothly inserted and locked. An elastic buckle or a quick locking mechanism can also be used to replace the cooperation between the slot 41 and the snap ring 21 to achieve quick locking and release.

[0048] As a further preferred embodiment of the present invention, the lifting rod 9 is a hollow structure, and a fixing screw is provided at the lower end of the lifting rod 9 for locking the screw 5. Allowing the screw 5 to pass through the interior provides additional stability; a fixing screw is provided at the lower end of the lifting rod 9 for fixing the screw 5 in a desired position to prevent the screw 5 from loosening during rotation. The rotating shaft 8 drives the gear segment 83, and then drives the rack segment 91 on the lifting rod 9 to achieve synchronous lifting and lowering of the screw 5; the fixing screw locks the screw 5 when it reaches a predetermined position. As an alternative, a hydraulic or pneumatic cylinder can be used to replace the fixing screw in the hollow lifting rod 9, and the screw 5 can be quickly and synchronously lifted and lowered by fluid pressure.

[0049] As a further preferred embodiment of the present invention, one end of the rotating shaft 8 is movably connected to the inner wall of the synchronous body 7, and the other end of the rotating shaft 8 is fixedly connected to a rotating disk 81, and a handle 82 is connected to the rotating disk 81, so that the operator can control the locking and removal process more conveniently and accurately. An electric or servo motor is used instead of the manual rotating disk 81 and the handle 82 to achieve automatic control and more precise adjustment.

[0050] As a further preference of this embodiment, a plurality of positioning grooves 31 matching the corresponding screws 5 are provided on the cover 3 to ensure that the screws 5 can be accurately positioned and tightened; the size and position of the positioning grooves 31 are designed according to the diameter of the screws 5 and the required locking force to ensure that the screws 5 can be evenly distributed and fit tightly to the cover 3; the positioning grooves 31 on the cover 3 are designed to be an adjustable structure, which allows adjustment according to the position and number of the screws 5 to adapt to covers 3 of different specifications.

[0051] Please refer to the attached Figure 5 As a further preferred embodiment of the present invention, a second rubber ring 87 is provided between the movable ring 86 and the rotating shaft 8 to enhance the friction force and ensure the stable rotation of the movable ring 86 on the rotating shaft 8, thereby preventing sliding or instability caused by insufficient friction; when the rotating shaft 8 rotates, the second rubber ring 87 generates friction force with the contact surface between the rotating shaft 8 and the movable ring 86, driving the movable ring 86 to rotate synchronously, thereby achieving balanced lifting of the locking plate 4. It is possible to consider using a sliding bearing made of metal or polymer instead of a rubber ring, or using different lubricants to adjust the friction coefficient.

[0052] As a further preference of this embodiment, a fixed sleeve 92 for guiding the lifting rod 9 is provided on the inner wall of the synchronization body 7, which is used to provide guidance for the lifting rod 9 and ensure the linearity and stability of the lifting rod 9 during movement.

[0053] Embodiment 2:

[0054] As a further preferred embodiment of Example 1, the gear segment 83 has an involute tooth shape with a module of 3.5 and a tooth number of 30 to 40 teeth; the width of the rack rod is 15 to 20 mm; the inner diameter of the lifting rod 9 is 1.2 to 1.5 times the diameter of the screw 5; and a wear-resistant gasket is installed at the bottom of the foot. It should be noted that the gear segment 83 has an involute tooth profile with a module of 3.5 and a tooth number of 30 to 40 teeth. The module of 3.5 provides appropriate tooth surface strength and load-bearing capacity, which is suitable for the required torque and load conditions, ensuring the durability and reliability of the gear when subjected to greater forces. The involute tooth profile provides smooth transmission and lower noise. The precise design of the module and the number of teeth ensures the uniformity and reliability of the transmission. The number of teeth designed to be 30 to 40 may be based on the consideration of achieving the required reduction ratio and gear size. The moderate number of teeth can ensure the strength of the gear while maintaining a compact size. Different gear types, such as helical gears or worm gears, can be used to adapt to different load or space requirements. The inner diameter of the lifting rod 9 is 1.2 to 1.5 times the diameter of the screw 5. The size range of the inner diameter allows the screw 5 to move freely inside the lifting rod 9 while avoiding instability caused by excessive clearance. A wear-resistant gasket is installed at the bottom of the foot to improve the wear resistance of the contact part between the locking device and the tank body 1 and to protect the surface of the tank body 1.

Claims

1. A locking device for a ball mill tank cover, comprising a locking belt (2), a locking plate (4) and a screw (5) arranged in a screw (5) hole of the locking plate (4), the locking plate (4) having protrusions on both sides, a clamping ring (21) being arranged on the locking belt (2), and after the locking belt (2) is wrapped tightly around the tank body (1), the protrusion of the locking plate (4) is tightened through the clamping ring (21), so that the screw (5) is pressed against the cover (3), characterized in that: A synchronous body (7) and a supporting foot (10) are provided above the locking plate (4), and the supporting foot (10) is connected to the lower side of the synchronous body (7); A rotating shaft (8) and a plurality of lifting rods (9) are provided in the synchronous body (7), and the lower end of each lifting rod (9) is movably connected to a corresponding screw (5); a rack segment (91) is provided on the lifting rod (9), and a gear segment (83) matching the rack segment (91) is provided on the rotating shaft (8); when the rotating shaft (8) rotates, the gear segment (83) drives each lifting rod (9) to move, so that each screw (5) simultaneously enters or leaves the screw (5) hole of the locking plate (4); With the midpoint of the horizontal length of the locking plate (4) as a reference, a fixed ring (84) and a movable ring (86) are symmetrically arranged on the rotating shaft (8), and a first rubber ring (85) connected to the fixed ring (84) is arranged between the fixed ring (84) and the movable ring (86); a pull ring (43) is arranged on both sides of the locking plate (4), and a traction rope (42) is fixed on the movable ring (86); one end of the traction rope (42) is fixed to the movable ring (86), and the other end is movably connected to the pull ring (43); when the rotating shaft (8) rotates, the fixed ring (84) and the first rubber ring (85) rotate simultaneously, so that the traction rope (42) pulls up the locking plate (4); until the locking plate (4) is blocked by the clamping ring (21) and the friction force of the first rubber ring (85) is insufficient to drive the movable ring (86) to rotate, the rotating shaft (8) continues to rotate relative to the movable ring (86), and the screw (5) continues to be synchronously lifted and lowered.

2. A ball mill tank cover locking device according to claim 1, characterized in that: The protrusions of the locking plate (4) are each provided with a clamping groove (41) that cooperates with the clamping ring (21).

3. A ball mill tank cover locking device according to claim 2, characterized in that: The lifting rod (9) is a hollow structure, and a fixing screw is provided at the lower end of the lifting rod (9) for locking the screw (5).

4. A ball mill tank cover locking device according to claim 3, characterized in that: One end of the rotating shaft (8) is movably connected to the inner wall of the synchronous body (7), and the other end of the rotating shaft (8) is fixedly connected to a rotating disk (81), and a handle (82) is connected to the rotating disk (81).

5. A ball mill tank cover locking device according to claim 4, characterized in that: The cover (3) is provided with a plurality of positioning grooves (31) matching corresponding screws (5).

6. A ball mill tank cover locking device according to claim 5, characterized in that: A second rubber ring (87) is provided between the movable ring (86) and the rotating shaft (8).

7. A ball mill tank cover locking device according to claim 6, characterized in that: A fixed sleeve (92) for guiding the lifting rod (9) is provided on the inner wall of the synchronization body (7).

8. A ball mill tank cover locking device according to claim 7, characterized in that: The gear segment (83) has an involute tooth shape with a module of 3.5, and the number of teeth is designed to be 30 to 40; the width of the rack rod is 15 to 20 mm.

9. A ball mill tank cover locking device according to claim 8, characterized in that: The inner diameter of the lifting rod (9) is 1.2 to 1.5 times the diameter of the screw (5).

10. A ball mill tank cover locking device according to any one of claims 1 to 9, characterized in that: A wear-resistant gasket is installed at the bottom of the supporting foot (10).

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